Electric-lamp socket



July 2, 1929. A. H. NERO ELECTRIC LAMP SOCKET Filed May 1, 1925 2 Sheets-Sheet INVENTOR F/Rv/n I-I-IIYERO J BY ATTORNEYS July 2, 1929 A. H. NERO 1.719.779

ELECTRIC LAMP SOCKET Filed May 1; 1925 2 sheets-sheet 2 I ATTORNEYS. r

Patented July 2 192-9.

UNITED STATES v1,119,779 PATE T .OEFICE.

ARVID R. NERO, OE wEsT HARTFOR CONNECTICUT, ASSIGNOR, BY MESNE AssIGN- MENTS, To THE ARROW-HART & HEGEMAN ELECTRIC COMPANY, OE HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRIC-name SOCKET.

Application filed May 1,

My invention relates to electric lamp sockets, and particularly to a socket of the candle type. The object of my invention is to provide elements which when applied to standard socket base parts, produce a candle socket of rugged and substantial character.

I In the accompanying drawings- Fig. 1 is a vertical section through candle socket in which my invention is em-' bodied in one form;

Fig. 2 is a plan thereof;

Fig. 3 is a partial vertical section through portion of the socket;

Figs. 4, 5 are sections on the lines H, 55, respectively of Fig. 1; I

Fig. 6 isa section on line 66 of Fig. 1 with certain elements above the section shown inpart; f

Fig. 7 is a perspective of .a modified coupling piece;

Fig.8 is a plan view of a modified form of yoke for a standard socket; and

Fig. 9 is a plan view of the yoke member fora standard socket.

A:built up candle socket embodying the present invention comprises a standard socket base of any suitable construction, and extension members. While the construction of the standard base may vary in many ways, 1 have shown one which comprises an insulating button 15 and overlying disc 16, substantially like that of my copending application Serial No. 27,298 filed on'even date herewith. The wire terminals 17 and 18 are associated with these elements of the socket. The terminal 17 may be integral with an 'arcuate yoke 19 which, in astandard socket, overlies the base flange of a standard screw shell. The yoke is secured in position above the disc l'6 by the screws 20 and 21 which unite these elements into a standard socket base unit. Carried by the disc 16 is a center contact 22, the base of which has an integral lug 23 projecting through the disc andconstitutingone of the fixed'contacts of the switch mechanism. The second fixed contact 24 of the switch is integral with the wire terminal 18. The terminal 18 has an extension 24' at right angles to the contact portion 24'. The extension 24 is apertured and rests in a shallow U-shaped recess 2 L" inthe top of base 15 where it is held by the insulating. disc 16. Screw 21 extends through the'aperture in extension 24 and 1925. Serial No. 27,297.

through registering openingsin disc 16 and yoke 19, as shownin Figure 3. The switch mechanism is in general of the type shown in my copending application filed herewith, and need not be further described than to point out that the button 15 is recessed to recelve the switch bar 25 and actuating coil spring 26, as well as the reciprocating cam plate 27 and actuating tumbler lever 28 by which the plate is shifted back and forth across the switch chamber to cause the throw of the switch bar 25. i I

To transform the standard socket into a candle socket, the screw shell is omitted and an extension block 2-9 of insulating material superposed on the disc 16 The absence of the standard screw shell permits the usual securing screws 20 and 21 to project through. the yoke'19 a sufficient distance to enter the ends of coupling ferrules 30 (Fig. 3) screwed thereon. The extension block 29 is clamped in position by long bolts 31 and 32 accommodated in side channels 33 and 34 in the block. The heads of these bolts engage the base flanges 35 and 36 of the screw shell 37 mounted at the upper end of the extension block 29.

A transverse boss 38 at this end of the block aids in positioning the screw shell, and, also affords a support for the center contact 39 of the candle socket. formed from a single strip of sheet metal extending the full depth of the block 29 and accommodated in an overhung channel .40

This contact may be formed in the side thereof, the lower end 41 of the strap resting freely against the bottom of a recess 42 at the inner end of the block and bearing against the center contact carried by the disc 16. The overhanging flanges 43 of the channels 40 confine the center contact strap against lateralescape, while the bent over opposite ends of the strap retain it against longitudinal escape. No separate screw means are therefore required to hold this strap in position. It is clear that when the screw bolts 31 and 32 are turned down in the ferrules 30 the establish electrical connection with the yo e 19 on the block 15,iand thus with the wire terminal 17, while the center contact strap 39 is engaged and clamped against the center contact 22 in the switch contr lled side of the circuit.

It is thus possible to use, without change, a standard socket base comprising the butbase, may be of any type, and that the essentialfeatures of the invention are embodied in a socket built up on a standard base whether the latter is or is not provided with a control switch.

In'Fig. 7 I have shown a modified form of coupling. Instead of the screw ferrules 30 I have indicated a U-shaped bracket 44, the

upper and lower flanges and 46 of which are tapped to receive the screws 20 or 21 and 31 or.32.

Another modification as indicated in Fig. 8 in which the yoke 47 (corresponding to 19 in the other figures) which overlies the disc 16 is tapped on different diameters, the taps 48 and 49 receiving the screw bolts 20 and 21, and the taps 50 and 51 receiving the tie bolts 31 and 32. In this construction the 1 coupling members, whether ferrules 30 or standards 44, are omitted. Of course the presence of the taps to receive the tie bolts in no way interferes with the functioning of the yoke when used in a standard socket construction.

. Candle sockets are ordinarily supported at the end of a wire conduit. The hickey which I provide for this purpose comprises a ferrule 52 which screws upon the end of the conduit and carries the supporting arms 53 and 54, the upper ends of which .are provided with clamping lugs 55 and 56 offset toward each other from the arms 53 and 54 and adapted to engage the neck 57 of a boss 58 integral wit-h the button 15. lVhen the clamping screw 59 which draws the arms 53 and 54 of. the hickey together is set up, the clamping lugs 55 and 56 are engaged between the end of the button 15 and the shoulder 60 of the boss 58, thus firmly clamping the socket to the hickey. The boss 58 and shoulder 60 are preferably annular so that any position of rotary adjustment between the candle sock- 'der 62 on the base.

et and the hickey may be used which convenience dictates.

Both the standard base and the extension block and its contacts are enclosed by an insulating jacket 61 which rests upon a shoul- A candle tube 63, of greater length, surrounds the jacket, and both are slotted in register at 64 to accommodate the switch, operating tumbler 28.

With the understanding that the details of construction may be modified in many ways without departing from the features which -I claim as my invention, I claim- 1. A candle socket comprising a standard socket base having a center contact and a screw shellsecuring yoke thereon, and wire terminals on said base for leading current to said yoke and center contact, in combination with an extension block of insulating material resting on said base, together with screw shell and center contacts at the outer end of the extension block, means electrically connecting the screw shell to the yoke and mechanically securing the extension block in position on the standard base, and means establishing electrical connection between the center contact of the standard base and the center contact of the extension block.

2. In a candle socket structure, an insulating block laterally recessed to form an overhung channel, a strap confined in said channel by the overhung side walls thereof, and transverse extensions at opposite ends of said strap overlying opposite ends of the block.

3. A candle socket comprising a standard socket base having center contact and screw shell yoke thereon, wire terminals for leading current to said yoke and center contact, securing means passing through the base and yoke and projecting above the latter, nipples engaged by the projecting ends of said means, in combination with an extension block of insulating material resting on said base, screw shell and center contacts at the outer end of the extension block, bolts electrically connecting the screw shell to the nipples and mechanically securing the extension block in position on the standard base, and means establishing electrical connection between the center contact of the standard base and the center contact of the extension block.

In testimony whereof I have signed my name to this specification.

ARVII NERO. 

